california, a winter tradition lives on in san francisco. more than two dozen brave souls endured 49 degrees water swimming from alcatraz island to san francisco's aquatic park. most wore wet suits for warmth except for one who donned nothing, but his speedo. brrr. if you've filled up your car or truck tank recently, you've probably noticed gas surprises gradually going higher and 2013 could be a pricey year at the bump. anchor of bulls and bear, brenda buttner has the details. >> shannon, watch out, that price at the pump may be driving higher. just as the ball is dropping for 2013, prices were rising. gas costs began january with a national average the highest ever to start a new year, 3.29 a gallon. by friday, the average for a gallon was 3.30. that's less than a month ago, but two cents more costly than a week ago and eight cents in the past two weeks. and chances are, prices will keep climbing in the next few months. some analysts expect them to peak at just under four bucks a gallon in early april. all of this even though oil prices ar